Stable carbon isotope analyses in sediments and its impli cations for reconstructing climatic and environmental changes 再建气候环境演化历史的碳同位素技术
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Standard guide for sampling and reporting of results for determination of biobased content of materials via carbon isotope analysis 通过碳同位素分析测定材料的生物基含量的测定结果的抽样和报告用标准指南